Piston-packing.



G. E. ROSS.

PISTON PACKING.

APPLICATION FILED MAR. 21, 1910.

Patented June 14,1910.

L IIIIIIIIIM 7 '6 7 7 Fig.0.

witnesses shown and described the features of novelty UNITED AES CHARLES E. Ross, or COLUMBUS, OHIO.

PISTON-PACKING.

Specification of Letters Patent. Patented June 14, 1910,

Application filed March 21, 1910. Serial No. 550,566,.

To all whom it may concern:

Be it known'that I, CHARLES E. Ross, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Piston-Packing, of which the following is a specification.

The object of this invention is to provide a simple, cheap and effective packing for pistons and analogous structures. 7

This invention consists in the construction of parts and combinations of parts herein bein pointed out in the claims appended to the escription.

In the accompanying drawings in which are shown two applications of the inventionFigure' 1 lllustrates an edge View partly in section and partly in elevation of the piston of a Y steam engine cylinder equipped with my packing. Fig. 2 is a section on the line w.m Fi 1. v Fig. 3 is a view partly in section an partly 1n elevation of a piston of a gas engine equipped with my invention. Fig. 4 is an edge view at the s lit side of one of the packing rings removed Fig. 5 is a side view of one of the spring actuated follower sections.

The racking ring designated 6 is made of, a sing e piece of steel or other suitable spring metal and is generally triangular in the cross section of the bar constituting it. The particular form of the cross section shown is a ri ht angle triangle with one of the acute ang es constituting the inner edge of the ring. The ring may be termed a beveled or chamfered ring. The ring is split or divided so that it can be sprung or ex- 'panded to permit it to 'be placed in its seat on the piston. p

At 6* is shown'a common form of lap joint at the split portion of the ring which joint may or may not be employed as may be desired.

In 5 is shown the ring actuated follower for pressing or .ho ding the packing ring pro er outward in contact with the in- -.ter1or si es of the cylinder. This follower includes an are shaped piece 7 of metalthat is also generally trian lar in crosssection' matching in size and orm the cross section of the acking ring proper, so that when its beveled or hypotenuse side is placed against the hypote'nuse'side of the ring a figure substantiall rectangular in cross section is pro- .duced. he inner face of the follower piece ingly simpleand cheap,

7 is provided with two notches 7 a and 7", one near each end of the piece into which is sprung, or slid side-wlse, a piece of stiff spring steel 8 or other suitable spring metal. The form and depth of the notches is such that the spring 8'can be sprung or curved 7 without seriously displacing the spring, especially when the follower is confined in a groove.

The piston represented in Fig. 3' is such as is commonly employed in explosion engines. This piston is shown as provided with four circumferential grooves 9. In ractice a groove of this kind is first rovi ed with a series of the followers pre erably in close succession and entirely encircling the groove and with their beveled sides coinciding. The ring 7 is then sprun into lace on the followers with its beve ed si e fittin a ainst the beveled sides of the followers. 11 ig. 1, which shows a steam piston, the circumferential groove 9 is made of twice the width of the groove shown in Fig. 3, and two of the rings 7 with their beveled sides facing toward the middle line of the groove'to form a V-shaped channel and two sets of the followers to form' a cooperating wedging ring are shown as employ p The number 0 grooves and packings in a cylinder is, of course, a matter of choice controlled by the necessityfor tightness, but with my construction greater efiiciency is obtained with fewer and narrower and thinner rings than are ordinarily used. The mode 0 securing the springs 8 is exceedeasy and t eir operation effective in holding the packing rin s to their proper osition.

. It will also be 0 served that with t 'sconsomewhat toward the inner side of the piece thelr manipulation struction the followers and rings can be com? 7 bmed to form wide or narrow packings and,-

damaged or worn.

What I claim is: 5

further that parts areeasily replaced'when 1. In combination with a pistonor analo-- gous structure having a circumferential groove, a plurality of followers seated in said groove, each consistingof an arc-shaped notches in and near its end,

a packing ring superimposed on said arcshaped pieces.

2. In combination with a piston, or analogous structure havin a circumferential groove, a plurality 0 followers seated in said groove each consisting of an arc-sha ed piece beveled at one side and having note ies near its end portions and a flat-metal spring subtending said arc-shaped piece and adapted to be retained by its own resilience in said notches in connection with said section and a packing ring havin beveled sides superimposed on the bevele sides of the follower pieces.

3. In combination with a piston or analogous structure having a circumferential groove, a plurality of followers seated in said groove each consisting of an arc-shaped piece beveled on its outer side and havlng notches near its ends on its inner side with a flat-metal spring seated in said notches and adapted by its own resilience to be retained therein and a plurality of packing rings in said grooves su erimposed in the beveled sides of said fol owers.

CHARLES E. ROSS.

Witnesses ALLEN W. THURMAN, BENJAMIN FINOKEL. 

